using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HttpServer;
using Rests;
using Terraria;

namespace TShockAPI {

    public class RestManager
    {
        private Rest Rest;
        public RestManager(Rest rest)
        {
            Rest = rest;
        }

        public void RegisterRestfulCommands()
        {
            Rest.Register(new RestCommand("/status", Status) {RequiesToken = false});
            Rest.Register(new RestCommand("/tokentest", TokenTest) { RequiesToken = true });

            Rest.Register(new RestCommand("/users/read/{user}/info", UserInfo) {RequiesToken = true});
            Rest.Register(new RestCommand("/users/destroy/{user}", UserDestroy) {RequiesToken = true});
            Rest.Register(new RestCommand("/users/update/{user}", UserUpdate) {RequiesToken = true});

            Rest.Register(new RestCommand("/bans/create", BanCreate) { RequiesToken = true });
            Rest.Register(new RestCommand("/bans/read/{user}/info", BanInfo) { RequiesToken = true });
            Rest.Register(new RestCommand("/bans/destroy/{user}", BanDestroy) { RequiesToken = true });
            

            Rest.Register(new RestCommand("/lists/players", UserList) {RequiesToken = true});

            Rest.Register(new RestCommand("/world/read", WorldRead) { RequiesToken = true });
            Rest.Register(new RestCommand("/world/meteor", WorldMeteor) { RequiesToken = true });
            Rest.Register(new RestCommand("/world/bloodmoon/{bool}", WorldBloodmoon) { RequiesToken = true });
            //RegisterExamples();
        }

        #region RestMethods

        object TokenTest(RestVerbs verbs, IParameterCollection parameters)
        {
            return new Dictionary<string, string> { { "status", "200" }, { "response", "Token is valid and was passed through correctly." } };
        }

        object Status(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();
            if (TShock.Config.EnableTokenEndpointAuthentication)
            {
                returnBlock.Add("status", "403");
                returnBlock.Add("error", "Server settings require a token for this API call.");
                return returnBlock;
            }
            string CurrentPlayers = "";
            int PlayerCount = 0;
            for (int i = 0; i < Main.player.Length; i++)
            {
                if (Main.player[i].active)
                {
                    CurrentPlayers += Main.player[i].name + ", ";
                    PlayerCount++;
                }
            }
            returnBlock.Add("status", "200");
            returnBlock.Add("name", TShock.Config.ServerNickname);
            returnBlock.Add("port", Convert.ToString(TShock.Config.ServerPort));
            returnBlock.Add("playercount", Convert.ToString(PlayerCount));
            returnBlock.Add("players", CurrentPlayers);

            return returnBlock;
        }

        #endregion

        #region RestUserMethods
        
        object UserList(RestVerbs verbs, IParameterCollection parameters)
        {
            string players = "";
            for (int i = 0; i < Main.player.Length; i++ )
            {
                if (Main.player[i].active)
                {
                    players += Main.player[i].name + ", ";
                }
            }
            var returnBlock = new Dictionary<string, string>();
            returnBlock.Add("status", "200");
            returnBlock.Add("players", players);
            return returnBlock;
        }

        object UserUpdate(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();
            var password = parameters["password"];
            var group = parameters["group"];

            if (group == null && password == null)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "No parameters were passed.");
                return returnBlock;
            }

            var user = TShock.Users.GetUserByName(verbs["user"]);
            if (user == null)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "The specefied user doesn't exist.");
                return returnBlock;
            }

            if (password != null)
            {
                TShock.Users.SetUserPassword(user, password);
                returnBlock.Add("password-response", "Password updated successfully.");
            }

            if (group != null)
            {
                TShock.Users.SetUserGroup(user, group);
                returnBlock.Add("group-response", "Group updated successfully.");
            }

            returnBlock.Add("status", "200");
            return returnBlock;
        }

        object UserDestroy(RestVerbs verbs, IParameterCollection parameters)
        {
            var user = TShock.Users.GetUserByName(verbs["user"]);
            if (user == null)
            {
                return new Dictionary<string, string> { { "status", "400" }, { "error", "The specified user account does not exist." } };
            }
            var returnBlock = new Dictionary<string, string>();
            try
            {
                TShock.Users.RemoveUser(user);
            } catch (Exception)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "The specified user was unable to be removed.");
                return returnBlock;
            }
            returnBlock.Add("status", "200");
            returnBlock.Add("response", "User deleted successfully.");
            return returnBlock;
        }

        object UserInfo(RestVerbs verbs, IParameterCollection parameters)
        {
            var user = TShock.Users.GetUserByName(verbs["user"]);
            if (user == null)
            {
                return new Dictionary<string, string>
                           {{"status", "400"}, {"error", "The specified user account does not exist."}};
            }

            var returnBlock = new Dictionary<string, string>();
            returnBlock.Add("status", "200");
            returnBlock.Add("group", user.Group);
            returnBlock.Add("id", user.ID.ToString());
            return returnBlock;
        }

        #endregion

        #region RestBanMethods

        object BanCreate(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();
            var ip = parameters["ip"];
            var name = parameters["name"];
            var reason = parameters["reason"];

            if (ip == null && name == null)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "Required parameters were missing from this API endpoint.");
                return returnBlock;
            }

            if (ip == null)
            {
                ip = "";
            }

            if (name == null)
            {
                name = "";
            }

            if (reason == null)
            {
                reason = "";
            }

            try
            {
                TShock.Bans.AddBan(ip, name, reason);
            }
            catch (Exception)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "The specified ban was unable to be created.");
                return returnBlock;
            }
            returnBlock.Add("status", "200");
            returnBlock.Add("response", "Ban created successfully.");
            return returnBlock;            
        }

        object BanDestroy(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();

            var type = parameters["type"];
            if (type == null)
            {
                returnBlock.Add("Error", "Invalid Type");
                return returnBlock;
            }

            var ban = new DB.Ban();
            if (type == "ip") ban = TShock.Bans.GetBanByIp(verbs["user"]);
            else if (type == "name") ban = TShock.Bans.GetBanByName(verbs["user"]);
            else
            {
                returnBlock.Add("Error", "Invalid Type");
                return returnBlock;
            }

            if (ban == null)
            {
                return new Dictionary<string, string> { { "status", "400" }, { "error", "The specified ban does not exist." } };
            }
            
            try
            {
                TShock.Bans.RemoveBan(ban.IP);
            }
            catch (Exception)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "The specified ban was unable to be removed.");
                return returnBlock;
            }
            returnBlock.Add("status", "200");
            returnBlock.Add("response", "Ban deleted successfully.");
            return returnBlock;
        }

        object BanInfo(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();

            var type = parameters["type"];
            if (type == null)
            {
                returnBlock.Add("Error", "Invalid Type");
                return returnBlock;
            }

            var ban = new DB.Ban();
            if (type == "ip") ban = TShock.Bans.GetBanByIp(verbs["user"]);
            else if (type == "name") ban = TShock.Bans.GetBanByName(verbs["user"]);
            else
            {
                returnBlock.Add("Error", "Invalid Type");
                return returnBlock;
            }

            if (ban == null)
            {
                return new Dictionary<string, string> { { "status", "400" }, { "error", "The specified ban does not exist." } };
            }

            returnBlock.Add("status", "200");
            returnBlock.Add("name", ban.Name);
            returnBlock.Add("ip", ban.IP);
            returnBlock.Add("reason", ban.Reason);
            return returnBlock;
        }

        #endregion

        #region RestWorldMethods
        object WorldRead(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();
            returnBlock.Add("status", "200");
            returnBlock.Add("name", Main.worldName);
            returnBlock.Add("size", Main.maxTilesX + "*" + Main.maxTilesY);
            returnBlock.Add("time", Main.time.ToString());
            returnBlock.Add("daytime", Main.dayTime.ToString());
            returnBlock.Add("bloodmoon", Main.bloodMoon.ToString());
            returnBlock.Add("invasionsize", Main.invasionSize.ToString());
            return returnBlock;
        }

        object WorldMeteor(RestVerbs verbs, IParameterCollection parameters)
        {
            WorldGen.dropMeteor();
            var returnBlock = new Dictionary<string, string>();
            returnBlock.Add("status", "200");
            returnBlock.Add("response", "Meteor has been spawned.");
            return returnBlock;
        }

        object WorldBloodmoon(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBlock = new Dictionary<string, string>();
            var bloodmoonVerb = verbs["bool"];
            bool bloodmoon;
            if (bloodmoonVerb == null)
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "No parameter was passed.");
                return returnBlock;
            }
            if (!bool.TryParse(bloodmoonVerb, out bloodmoon))
            {
                returnBlock.Add("status", "400");
                returnBlock.Add("error", "Unable to parse parameter.");
                return returnBlock;
            }
            Main.bloodMoon = bloodmoon;
            returnBlock.Add("status", "200");
            returnBlock.Add("response", "Blood Moon has been set to " + bloodmoon.ToString());
            return returnBlock;
        }
        #endregion

        #region RestExampleMethods

        public void RegisterExamples()
        {
            Rest.Register(new RestCommand("/HelloWorld/name/{username}", UserTest) {RequiesToken = false});
            Rest.Register(new RestCommand("/wizard/{username}", Wizard) {RequiesToken = false});
        }

        //The Wizard example, for demonstrating the response convention:
        object Wizard(RestVerbs verbs, IParameterCollection parameters)
        {
            var returnBack = new Dictionary<string, string>();
            returnBack.Add("status", "200"); //Keep this in everything, 200 = ok, etc. Standard http status codes.
            returnBack.Add("error", "(If this failed, you would have a different status code and provide the error object.)"); //And only include this if the status isn't 200 or a failure
            returnBack.Add("Verified Wizard", "You're a wizard, " + verbs["username"]); //Outline any api calls and possible responses in some form of documentation somewhere
            return returnBack;
        }

        //http://127.0.0.1:8080/HelloWorld/name/{username}?type=status
        object UserTest(RestVerbs verbs, IParameterCollection parameters)
        {
            var ret = new Dictionary<string, string>();
            var type = parameters["type"];
            if (type == null)
            {
                ret.Add("Error", "Invalid Type");
                return ret;
            }
            if (type == "status")
            {
                ret.Add("Users", "Info here");
                return ret;
            }
            return null;
        }
        #endregion
    }
}